[Search:AppSearch:Engines:SearchUI:Search Experience page]For Search field announcement of results found and not found

[L1nBra]

Description
User should hear correct one announcement. Either the results were found or results were not found. Not both at once.

Preconditions
Stateful App Search -> Engines -> Search UI -> Search Experience page is opened.
Engine is added.
Use Screen Reader (NVDA).

Steps to reproduce

1.Using only keyboard navigate to Search field by pressing Tab key.
2.Enter text which would provide results (f.e.: test).
3.Observe screen reader

UI elements + NVDA Speech Viewer

Actual Result

• When user finishes entering word test, screen reader announces "No results are available 10 results are available...".

Expected Result

• Announcement is made about results found "10 results are available...".

Meta Issue

Kibana Version: 8.17.0-SNAPSHOT

OS: Windows 11 Pro

Browser: Chrome Version 130.0.6723.70 (Official Build) (64-bit)

Screen reader: NVDA

WCAG or Vendor Guidance (optional)

• Understanding SC 4.1.2: Name, Role, Value (Level A)(https://www.w3.org/WAI/WCAG22/Understanding/name-role-value.html)

Related to: https://github.com/elastic/search-team/issues/8256

[elasticmachine]

Pinging @elastic/kibana-accessibility (Project:Accessibility)